Tagline: “This time… Earth fights back from the ocean floor.”

Year 2197 — Earth is no longer the home we once knew. After twelve waves of alien invasions, humanity has adapted, evolved… and hardened.

The thirteenth and final assault has begun.
But this time, we’re not defending. We’re retaliating.

The story follows General Elias Rourke, a battle-scarred military strategist and veteran of three previous invasions, who now commands Poseidon Division — Earth’s most advanced underwater assault force. The enemy, known only as The Dredge, has emerged from beneath the ocean floor, having seeded Earth’s deepest trenches centuries ago in preparation for this final strike.

As cities fall and skies burn, Earth’s hope lies in the oceans.

Armed with submersible warships, gravity cannons, and neural-linked exo-suits, Poseidon Division launches a daring counter-offensive into the darkest depths of the planet. Their mission: destroy the alien hive core before it awakens the Tideborn, an ancient bio-mechanical leviathan capable of wiping out all remaining human life.

But when Rourke discovers that the Dredge have been manipulating Earth’s tectonics and sea levels for generations, a terrifying truth emerges: the real war was never for the sky — it was for the sea.

With time running out and betrayal among his ranks, Rourke must confront not only the enemy below, but his own past decisions that may have doomed Earth long before the first invasion.